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本文从渗透方程导出砂浆非稳态渗透系数与时间和渗透深度的关系,采用水银压入法研究水泥浆体的孔结构,采用容重法测试砂浆比孔容的变化,分析孔结构与抗渗性的关系。干热养护虽然具有很多优点,但混凝土内部沿水分蒸发方向形成定向串通毛细孔道,大于2000A的多害孔增加,最大可几孔径增大,因而严重地降低砂浆的抗渗性。
In this paper, the relationship between the non-steady permeability coefficient of mortar and the time and depth of penetration is derived from the permeability equation. The pore structure of cement paste is studied by mercury intrusion method, and the change in specific pore volume of the mortar is tested by the bulk density method, and the pore structure and impermeability are analyzed. Relationship. Although dry heat curing has many advantages, the inside of the concrete forms a directional collusion capillary channel along the evaporation direction of the water, and more than 2000A multi-difficult pores increase, and the largest possible pore diameter increases, thereby seriously reducing the impermeability of the mortar.